100 MWh C&I Storage Station Cuts Energy Costs 32% at a Dongguan Industrial Park
Forty-eight HiStore containers, two on-site substations and a 32% cut in electricity cost — how a Dongguan electronics park turned its tariff structure into an asset.
The challenge
The park hosts 23 electronics manufacturers running SMT lines around the clock. Evening peak demand reached 41 MW against a 50 MVA grid connection, and Guangdong’s two-peak tariff meant more than 60% of energy was bought at the highest price band.
Expanding the grid connection would have cost years; the tariff structure, however, could be turned around in months.
What we delivered
- 48 × HiStore 2.1 MWh liquid-cooled containers (100.8 MWh total)
- 25 MW / 35 kV grid interface across two new on-site substations
- Park-level EMS dispatching two full cycles per day
- Fire suppression to NFPA 855 with pack-level gas detection
- 10-year performance guarantee with remote monitoring
We stopped thinking of the battery as equipment after the first settlement cycle. It is a trading desk that happens to weigh 1,600 tonnes. — Park energy manager
Results after 12 months
Electricity cost fell 32% year-on-year and peak demand drawn from the grid dropped 19 MW, deferring the connection upgrade indefinitely. Round-trip efficiency held at 88.6% across 681 full cycles, and availability averaged 99.2% — including two typhoon shutdowns initiated remotely as a precaution.
Thinking about a similar project?
Industrial parks above 20 MW of load are where storage economics work hardest. Send us a recent monthly bill and the single-line diagram — our engineers will return a bankable feasibility snapshot within a week.
